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Featured Articles

Speed Secrets: Zex Nitrous and Small Block Chevy Engines

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Whether from a turbo, blower, or nitrous, there is a lot to love about power adders. Especially when used in a Small Block designed specifically for them, like the SBC 383 Stroker from Blue Print Engines. It has everything you’d want for power adder applications, Including forged internals, low compression, and aluminum free flowing heads. Making the 383 that much ... Read More »

Speed Secrets: It’s Time to Juice the LS

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Typically, nitrous comes in two different configurations. For EFI applications there is the wet fogger system, where you combine nitrous and fuel in a single fogger nozzle and install it somewhere in the air intake system. Although, if you were looking for nitrous for a carbureted application, a perimeter plate type system would be the way to go. While both ... Read More »

Speed Secrets: Combining a Big Block Chevy with Nitrous Means Big Power

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As far as naturally aspirated power, it’s hard to beat a Stroker Big Block Chevy, especially one with a nice hearty camshaft from Comp Cams. The fun doesn’t have to stop there though. With a little throttle in a bottle, a healthy BBC can get real serious, real fast. To explore just how far a little nitrous can go when ... Read More »

Speed Secrets: Putting the Wrong Camshaft in an LS Engine

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GM made two different port style heads for the LS engine family, the cathedral port and the rec-port, and while everyone knows that LS engines respond very well to cam swaps, what happens when the “wrong camshaft” is used in an LS engine? To find out what would happen if you took a cathedral port cam and installed it in ... Read More »

Speed Secrets: Gen III 5.7-Liter Hemi Camshaft Swap

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Richard Holdener with Speed Secrets teamed up with Comp Cams to take a Gen III 5.7L Hemi and make it go from mild to wild with just a cam swap. For a test engine, the team snagged a 5.7L Hemi from a Ram truck and got to work. With a little machine work they changed the bore and stroke of ... Read More »

Speed Secrets: Small Block Chevy Stroker Engine Cam Swap

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Using a test engine from the previous Speed Secrets: Single Pattern Camshaft Test, Richard Holdener and Comp Cams run the 420ci Stroker SBC with a Turbo to see how two of those single plane cams handle some boost. To recap, the team ran a complete mild to wild single pattern camshaft test on the Stroker Small Block Chevy featuring an ... Read More »

Speed Secrets: How to Upgrade Your Trunions 

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Whether you’re building a 4.8L, 5.3L, or 6.0L LS wrecking yard engine or just looking to freshen up the top end of your LS, Its very important to upgrade the trunions. With the age of the LS based engine, it is not unusual for them to have 150K-250K miles on them. With mileage like that you can imagine how many ... Read More »

Speed Secrets: Single Pattern Camshaft Test

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Richard Holdener with Speed Secrets teamed up with Comp Cams, so right off the bat, you know theres gonna be a cam test but not just any cam test. A complete mild to wild single pattern camshaft test on a Stroker Small Block Chevy. For a test motor, a 420ci Stroker SBC seemed like a good starting point to run ... Read More »

Speed Secrets: Swapping a Cam in an LS3 Crate Engine

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No matter how many times or combination of upgrades, testing an LS based engine never gets old. On Speed Secrets with Richard Holdner and the guys at Comp Cams, the team puts an LS3 Crate Motor on the dyno to see just how much power a cam swap has to offer.  Normally a factory LS3 engine has stock LS3 heads, ... Read More »

Speed Secrets: Upgrade an LS2 Crate Engine

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While a camshaft, cylinder head, or intake manifold upgrade alone on an LS2 will get you decent power gains, the combination of all three is even better. Richard Holdener from Speed Secrets and the guys from Comp Cams team up to go all in on an LS2. Before upgrading the LS2 Crate motor, the team needs to establish a baseline ... Read More »